Boom assembly



FIG. 1 is an isometric view of a boom assembly showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is right side elevational view thereof; and

FIG. 7 is left side elevational view thereof. 

The ornamental design of a boom assembly, as shown. 